Lighting device



FIG. 1 is a perspective view of a lighting device, as viewed from the top and one side thereof.

FIG. 2 is a side elevation view of the lighting device of FIG. 1, the other side being a mirror image thereof.

FIG. 3 is a top plan view of the lighting device of FIG. 1; and,

FIG. 4 is a bottom plan view of the lighting device of FIG. 1.

The details shown in broken lines are for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a lighting device, as shown and described. 